5MW급 해상풍력발전시스템용 Suction Caisson 하부구조물 적합성 연구
A Study on the Suitability of Suction Caisson Foundation for the 5Mw Offshore Wind Turbine
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Foundation plays an important role in the offshore wind turbine system. Different from conventional foundations, the suction caisson is proven to be economical and reliable. In this work, three-dimensional finite element method is used to check the suitability of suction caisson foundation. NREL 5MW wind turbine is chosen as a baseline model in our simulation. The maximum overturning moment and vertical load at the mudline are calculated using FAST and Bladed. Meanwhile the soil-structure interaction response from our simulation is also compared with the experiment data from Oxford university. The design parameter such as caisson length, diameter of skirt and spacing of multipod are investigated. Accordingly based on these parameters suggestions are given to use suction caisson foundations more efficiently.
Abstract
Foundation plays an important role in the offshore wind turbine system. Different from conventional foundations, the suction caisson is proven to be economical and reliable. In this work, three-dimensional finite element method is used to check the suitability of suction caisson foundation. NREL 5MW wind turbine is chosen as a baseline model in our simulation. The maximum overturning moment and vertical load at the mudline are calculated using FAST and Bladed. Meanwhile the soil-structure interaction response from our simulation is also compared with the experiment data from Oxford university. The design parameter such as caisson length, diameter of skirt and spacing of multipod are investigated. Accordingly based on these parameters suggestions are given to use suction caisson foundations more efficiently.
참고문헌 (10)
- EWEA, "The european offshore wind industry-key trends and statistics 2009", ~ (2010)
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- G. T. Houlsby, "Field trials of suction caissons in clay for offshore wind turbine foundations", ~ (2005)
- G. T. Houlsby, "Modelling of shallow foundations for offshore structures", Conference of Thomas Telford (2001)
- Kuhn. M, "Wind power plants : Fundamentals, design, construction and operation", ~ (2002)
- J. Jonkman, "Definition of a 5-MW reference wind turbine for offshore system development" (2009)
- C. Leblanc, "Response of stiff piles in sand to long term cyclic lateral loading" (2007), Geotechinque
- P. Schaumann, "Can jackets and tripods compete with monopiles?", ~ (2005)
- Yun-gang Zhan, "Numerical analysis of bearing capacity of suction bucket foundation for offshore wind turbine", ~ (2010)
- G. T. Houlsby, "Suction caissons for wind turbines", ~ (2005)